Anti-Aliasing Filter

So, I was dutifully doing my practice papers for EECS 206, and lo and behold, I came upon this question:

26. The purpose of an antialias filter in a DSP system is
a) Increase the sampling rate
b) Ensure there are no frequencies above the Nyquist rate
d) Eliminate noise
e) Eliminate any TV series starring Jennifer Garner

Ok, did you get that?

e) Eliminate any TV series starring Jennifer Garner

WTF??

btw the correct answer is b.